Truck lubricator
AssigneeSECO Manufacturing Company, Inc.
InventorJack V. Stong
Life of this patent
Estimating the term…
Abstract
Apparatus for periodically delivering liquids or viscous materials at high pressure and in precise amounts to multiple locations is particularly useful in connection with automatically lubricating machinery. The apparatus is formed having a housing and lubricant reservoir within which lubricant is retained substantially at atmospheric pressure levels. Discrete quantities of lubricant are pumped through a plurality of conduits to lubrication sites by a pump assembly which is formed having a piston slidable within an elongate chamber.
Claims17
In apparatus for periodically dispensing lubricant through a plurality of conduits extending to selected sites within a mechanism, said apparatus being of a variety having a housing mountable in the vicinity of said mechanism, said housing including a reservoir for retaining a quantity of said lubricant and distributor means mounted upon said housing and having input means for receiving said lubricant and including selector means actuable to incrementally rotate about a centrally disposed axis between positions effecting a passageway communicating said input means with predetermined ones of said conduits, the improvement comprising:
- a pump assembly fixedly mounted upon said housing substantially coaxially with said centrally disposed axis and including:
- cylinder means defining a pump chamber having an inlet port communicating with said reservoir;
- inlet check valve means for selectively opening and closing said inlet port;
- a pump piston actuable to slide reciprocally within said pump chamber and having a metering edge movable therewith between first and second positions along a path spaced a predetermined distance from said inlet port and defining a receiving chamber within said pump chamber when said metering edge is at said first position;
- meter valve means mounted upon said cylinder means, positioned a predetermined distance along said path from said first position, communicating between said receiving chamber and said reservoir and having open and closed orientations for selectively effecting the removal of lubricant from said receiving chamber to said reservoir when said pump piston is moved from said first toward said second position;
- control means for selectively effecting the opening and closing of said meter valve means;
- output valve means communicating between said pump chamber and said distributor means input means;
- and
- actuator means mounted upon said housing for selectively actuating said selector means to effect said rotation thereof and for actuating said pump piston to move from said second to said first position to load said receiving chamber with a charge of said lubricant through said inlet port and, subsequently, to move from said first to said second position to effect the expression of said lubricant selectively through said meter valve means when in an open orientation and, subsequently, through said output valve means.
Dependencies are inferred from the claim text.